Vibration when clutch out in neutral
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 7,640
Likes: 2,460
From: Indiana
Vibration when clutch out in neutral
Hi,
any thoughts on vibration when i let clutch out in neutral? When. Push clutch in it stops. I can’t wrap head around why.
- clutch adjustment good with correct pull off on top so throwout bearing not engaged.
- transmission fluid changed
- no noise other than vibration, no shift issues or clutch
thanks!
any thoughts on vibration when i let clutch out in neutral? When. Push clutch in it stops. I can’t wrap head around why.
- clutch adjustment good with correct pull off on top so throwout bearing not engaged.
- transmission fluid changed
- no noise other than vibration, no shift issues or clutch
thanks!
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
Flywheel and pressure plate are spinning anyway even with clutch in. I can't see a clutch disk itself being out of balance enough to cause this. You step on clutch the clutch disk, input shaft, countergear and 1st thru third gears stop spinning. I think you have a transmission problem
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 7,640
Likes: 2,460
From: Indiana
Flywheel and pressure plate are spinning anyway even with clutch in. I can't see a clutch disk itself being out of balance enough to cause this. You step on clutch the clutch disk, input shaft, countergear and 1st thru third gears stop spinning. I think you have a transmission problem
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
Do you have a centerforce clutch? if so,, thats your problem
They are a POS.... and their is not a physics law that I know of that will EVER center and balance that cheap chenzy weight setup they have... they will ALWAYS go off balance, when you push in the clutch you force the stupid little bs weights more centered thus vibration goes away, let out the clutch the weight slip off center again and you feel vibration.. pretty simple..
They are a POS.... and their is not a physics law that I know of that will EVER center and balance that cheap chenzy weight setup they have... they will ALWAYS go off balance, when you push in the clutch you force the stupid little bs weights more centered thus vibration goes away, let out the clutch the weight slip off center again and you feel vibration.. pretty simple..
Last edited by pauldana; Aug 11, 2019 at 09:30 PM.
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 7,640
Likes: 2,460
From: Indiana
Do you have a centerforce clutch? if so,, thats your problem
They are a POS.... and their is not a physics law that I know of that will EVER center and balance that cheap chenzy weight setup they have... they will ALWAYS go off balance, when you push in the clutch you force the stupid little bs weights more centered thus vibration goes away, let out the clutch the weight slip off center again and you feel vibration.. pretty simple..
They are a POS.... and their is not a physics law that I know of that will EVER center and balance that cheap chenzy weight setup they have... they will ALWAYS go off balance, when you push in the clutch you force the stupid little bs weights more centered thus vibration goes away, let out the clutch the weight slip off center again and you feel vibration.. pretty simple..
honestly I don’t know as the car is a few months new to me...long story but basically fluid change and clutch adjustment when i got it smoothed everything out but cannot lick this issue. So you think a disk can do that? I have read pilot bushing, bearing in transmission as possibilities..
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
Hi
honestly I don’t know as the car is a few months new to me...long story but basically fluid change and clutch adjustment when i got it smoothed everything out but cannot lick this issue. So you think a disk can do that? I have read pilot bushing, bearing in transmission as possibilities..
honestly I don’t know as the car is a few months new to me...long story but basically fluid change and clutch adjustment when i got it smoothed everything out but cannot lick this issue. So you think a disk can do that? I have read pilot bushing, bearing in transmission as possibilities..
lot of people use the CF clutch because it is cheap and makes big HP promises....
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
POS Center Force clutch...from my 383 As you can see the weights have gone off center... Please explain how they "self center" themselves?? lol
Example of a quality clutch, McCloud RTX Twin Disk on my 427... It holds a honest 650hp. from this engine.
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Your thrust bushing could be worn out or the throw out bearing as well. either way it sounds like the clutch has to come out to solve this
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Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 7,640
Likes: 2,460
From: Indiana
Well i still have this vibration at hot low idle 900rpm with clutch engaged and out..when you push clutch in it stops vibrating..also changed all u joint and get shifter rattling over 80 mph..better at high speed as the u joint near transmission was notchy..
clutch worksgreat and original so really not thrilled about going in...
@Jebbysan insidetransmission only possibilty? Bearing? Runs good shifts excellent
i bought this book..and great videos once i figured out i own a t-10? Labeled (order #) m21 but not a muncie?
https://www.5speeds.com/cart/index.p...&product_id=33
just want to plan this out..is this doable at home if i get a harbor freight press?
- using quickjack
- is it worth it to cut crossmember? Still doable? Solid?
- does my issue sound like a transmission bearng? Which comes n rebuild kit he sells?
thank you for advice
clutch worksgreat and original so really not thrilled about going in...
@Jebbysan insidetransmission only possibilty? Bearing? Runs good shifts excellent
i bought this book..and great videos once i figured out i own a t-10? Labeled (order #) m21 but not a muncie?
https://www.5speeds.com/cart/index.p...&product_id=33
just want to plan this out..is this doable at home if i get a harbor freight press?
- using quickjack
- is it worth it to cut crossmember? Still doable? Solid?
- does my issue sound like a transmission bearng? Which comes n rebuild kit he sells?
thank you for advice
Dr. Detroit
Joined: Mar 2012
Posts: 10,093
Likes: 4,017
From: New Braunfels Texas
Well i still have this vibration at hot low idle 900rpm with clutch engaged and out..when you push clutch in it stops vibrating..also changed all u joint and get shifter rattling over 80 mph..better at high speed as the u joint near transmission was notchy..
clutch worksgreat and original so really not thrilled about going in...
@Jebbysan insidetransmission only possibilty? Bearing? Runs good shifts excellent
i bought this book..and great videos once i figured out i own a t-10? Labeled (order #) m21 but not a muncie?
https://www.5speeds.com/cart/index.p...&product_id=33
just want to plan this out..is this doable at home if i get a harbor freight press?
- using quickjack
- is it worth it to cut crossmember? Still doable? Solid?
- does my issue sound like a transmission bearng? Which comes n rebuild kit he sells?
thank you for advice
clutch worksgreat and original so really not thrilled about going in...
@Jebbysan insidetransmission only possibilty? Bearing? Runs good shifts excellent
i bought this book..and great videos once i figured out i own a t-10? Labeled (order #) m21 but not a muncie?
https://www.5speeds.com/cart/index.p...&product_id=33
just want to plan this out..is this doable at home if i get a harbor freight press?
- using quickjack
- is it worth it to cut crossmember? Still doable? Solid?
- does my issue sound like a transmission bearng? Which comes n rebuild kit he sells?
thank you for advice
Jebby
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 7,640
Likes: 2,460
From: Indiana
thank you sir..so no big time damage can occur ?
i shall wait to wear out my clutch some more and study. Only vibrates at hot idle.. any change of revolutions at idle clutch out seem to smooth it out..weird.. (and of course the shifter **** vibration over 80 which may not be related)
internet..maybe not
https://www.knowyourparts.com/techni...s-replacement/
Pilot Bushings and Bearings
To check for a noisy pilot bushing, begin listening for noise after starting the engine. Listen for noise with the engine running, the transmission in gear, and the clutch pedal to the floor. The clutch is released, but the transmission is in gear, which causes the engine crankshaft to spin around the held transmission input shaft. Noise under these conditions indicates a worn pilot bushing or bearing, or a worn release bearing.
BUT I FOUND THIS!!! sound right?? its not really a noise but vibration?
A bearing noise that occurs if you release the pedal to engage the clutch while in neutral, but goes away when the pedal is depressed, is caused by a defect on the transmission’s input shaft bearing.
i shall wait to wear out my clutch some more and study. Only vibrates at hot idle.. any change of revolutions at idle clutch out seem to smooth it out..weird.. (and of course the shifter **** vibration over 80 which may not be related)
internet..maybe not
https://www.knowyourparts.com/techni...s-replacement/
Pilot Bushings and Bearings
To check for a noisy pilot bushing, begin listening for noise after starting the engine. Listen for noise with the engine running, the transmission in gear, and the clutch pedal to the floor. The clutch is released, but the transmission is in gear, which causes the engine crankshaft to spin around the held transmission input shaft. Noise under these conditions indicates a worn pilot bushing or bearing, or a worn release bearing.
BUT I FOUND THIS!!! sound right?? its not really a noise but vibration?
A bearing noise that occurs if you release the pedal to engage the clutch while in neutral, but goes away when the pedal is depressed, is caused by a defect on the transmission’s input shaft bearing.
Last edited by interpon; Nov 16, 2020 at 08:35 AM.
Thread Starter
Le Mans Master
Joined: Jun 2019
Posts: 7,640
Likes: 2,460
From: Indiana
Hi, i have decided to try and tackle rebuilding my transmission. Pretty sure input bearing
research tells me i have a borg warner super t-10 and this is the kit i’m going with
https://www.5speeds.com/cart/index.p...&product_id=80
just to confirm that is correct for a 79 L82 m21 close ratio transmission?
are there lubricants, assembly dope, recommendations i can get locally recommended ?
i will assume a press is in my future or take it somewhere for a few procedures.
some have recommended a plywood jig in a vice to aid rebuilding, anyone got specifics? I dont have spare parts housings around.
i also have shop manual and paul cangialosi book, also buying his kit, and hopefully this forum help
also i have read about putting in removable crossmember, but seems awfully expensive and im pretty sure even if i wanted to do that i would remove transmission at least for once initially with it in..thoughts? It’s staying for now also budget. I do have mig..
thank you!
research tells me i have a borg warner super t-10 and this is the kit i’m going with
https://www.5speeds.com/cart/index.p...&product_id=80
just to confirm that is correct for a 79 L82 m21 close ratio transmission?
are there lubricants, assembly dope, recommendations i can get locally recommended ?
i will assume a press is in my future or take it somewhere for a few procedures.
some have recommended a plywood jig in a vice to aid rebuilding, anyone got specifics? I dont have spare parts housings around.
i also have shop manual and paul cangialosi book, also buying his kit, and hopefully this forum help
also i have read about putting in removable crossmember, but seems awfully expensive and im pretty sure even if i wanted to do that i would remove transmission at least for once initially with it in..thoughts? It’s staying for now also budget. I do have mig..
thank you!
Last edited by interpon; Dec 11, 2020 at 08:54 AM.